CVE-2025-38656 — Use After Free in Linux

CWE-416 — Use After Free6 documents6 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 94.98%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
12
LinuxLinux KernelDebian Linux+9 more
Timeline
PublishedAug 22

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: Fix error code in iwl_op_mode_dvm_start() Preserve the error code if iwl_setup_deferred_work() fails. The current code returns ERR_PTR(0) (which is NULL) on this path. I believe the missing error code potentially leads to a use after free involving debugfs.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages12 packages

▶NVDlinux/linux_kernel5.4.297 — 5.5+5

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-6g9x-rpr5-4qrw: In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: Fix error code in iwl_op_mode_dvm_start() Preserve the error code↗2025-08-22
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OSV
CVE-2025-38656: In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: Fix error code in iwl_op_mode_dvm_start() Preserve the error code i↗2025-08-22
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📋Vendor Advisories

3
Red Hat
kernel: wifi: iwlwifi: Fix error code in iwl_op_mode_dvm_start()↗2025-08-22
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Microsoft
wifi: iwlwifi: Fix error code in iwl_op_mode_dvm_start()↗2025-08-12
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Debian
CVE-2025-38656: linux - In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwi...↗2025
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CVE-2025-38656 — Use After Free in Linux | cvebase